Week 8 - Challenge 4 - Bumper

Aim : To create a model of bumper design from given class A surface and do draft analysis.

Objective :

• To create class B and class C surface .
• To do draft analysis .
• To make report of it .

Introduction :

Class A surface :

• It is asthetic part of car created through scaning of clay model .
• This is the input CAD model for part design .

Class B surface :

• It is surface for engineering advancement .
• It is created at the thickness value of component toward inside .

Class C surface :

• class C surface is created by joining class A and class B surface .

Methodology :

• checking continuity of surface.
• Tooling axis.
• Draft analysis.
• Class B surface.
• Class C surface .
• Making solid body .
• Draft analysis of final product .

Tooling axis :

• The direction in which the mould open and close is called tooling direction.
• Extract the base and create the point at the center .
• from that point creat line which is tooling axis.

Given class A surface :

Tooling axis :

B surface creation :

• offseting class A surface inward by 3 mm which is the thickness .
• There are three major patches .
• repairing it through join , extrude ,sweep , multiple extract , trim command.

Final Class B surface :

Creation of C surface :

• Boundary of class A surface is extracted and middle portion is also extracted .
• Sweep command is used to create C surface at 90 degree of class surface .
• class C and class B are trimed and join with class A surface .

Creating solid body :

Finally solid is bodyis created by using close surface command .

Draft analysis :

• First the material mode is selected in custumize view swction.
• Now click on the compass tab and align it with tooling axis .
• Now click on the lock .
• click on the surface .
• Surface colour shows green , which mean that the it has more than 3 degree angle , which is good for manufacturing .

Class A surface :

Final body :

Different views are as :

Isometric view :

Front view :

Side view :

Top view :

Tree structure :

Publication :

Conclusion:

• Created class B surface and class C surface of bumper .
• Perform draft analysis .